| Message ID | 20250403-uvc-orientation-v1-7-1a0cc595a62d@chromium.org |
|---|---|
| State | New |
| Headers | show |
| Series | media: uvcvideo: Add support for V4L2_CID_CAMERA_SENSOR_ORIENTATION | expand |
Hi Ricardo, Thank you for the patch. On Thu, Apr 03, 2025 at 07:16:18PM +0000, Ricardo Ribalda wrote: > Fetch the orientation from the fwnode and map it into a control. > > The uvc driver does not use the media controller, so we need to create a > virtual entity, like we previously did with the external gpio. I don't want to create a new entity every time we need to expose a new "software" control. If we keep handling GPIO as an entity, can we use it to expose all non-UVC controls ? Otherwise, if we have to create a new entity here, let's make sure we can reuse it in the future for more controls, and name it appropriately. This being said, functionally speaking, wouldn't the V4L2_CID_CAMERA_ORIENTATION control make more sense on the camera input terminal ? Have you considered adding it there ? Or would it be too intrusive ? > Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> > --- > drivers/media/usb/uvc/Makefile | 2 +- > drivers/media/usb/uvc/uvc_ctrl.c | 21 +++++++++++ > drivers/media/usb/uvc/uvc_driver.c | 14 ++++++-- > drivers/media/usb/uvc/uvc_entity.c | 1 + > drivers/media/usb/uvc/uvc_fwnode.c | 73 ++++++++++++++++++++++++++++++++++++++ > drivers/media/usb/uvc/uvcvideo.h | 15 ++++++++ > include/linux/usb/uvc.h | 3 ++ > 7 files changed, 125 insertions(+), 4 deletions(-) > > diff --git a/drivers/media/usb/uvc/Makefile b/drivers/media/usb/uvc/Makefile > index 85514b6e538fbb8284e574ca14700f2d749e1a2e..2a5b76aab756c21011d966f3ce0410ff6b8e5b19 100644 > --- a/drivers/media/usb/uvc/Makefile > +++ b/drivers/media/usb/uvc/Makefile > @@ -1,7 +1,7 @@ > # SPDX-License-Identifier: GPL-2.0 > uvcvideo-objs := uvc_driver.o uvc_queue.o uvc_v4l2.o uvc_video.o uvc_ctrl.o \ > uvc_status.o uvc_isight.o uvc_debugfs.o uvc_metadata.o \ > - uvc_gpio.o > + uvc_gpio.o uvc_fwnode.o > ifeq ($(CONFIG_MEDIA_CONTROLLER),y) > uvcvideo-objs += uvc_entity.o > endif > diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c > index cbf19aa1d82374a08cf79b6a6787fa348b83523a..df84bf292dcab6b833fbd3c70eccbe9e567ee567 100644 > --- a/drivers/media/usb/uvc/uvc_ctrl.c > +++ b/drivers/media/usb/uvc/uvc_ctrl.c > @@ -376,6 +376,13 @@ static const struct uvc_control_info uvc_ctrls[] = { > | UVC_CTRL_FLAG_GET_DEF > | UVC_CTRL_FLAG_AUTO_UPDATE, > }, > + { > + .entity = UVC_GUID_FWNODE, > + .selector = 0, > + .index = 0, > + .size = 1, > + .flags = UVC_CTRL_FLAG_GET_CUR, > + }, > }; > > static const u32 uvc_control_classes[] = { > @@ -975,6 +982,17 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = { > .data_type = UVC_CTRL_DATA_TYPE_BITMASK, > .name = "Region of Interest Auto Ctrls", > }, > + { > + .id = V4L2_CID_CAMERA_ORIENTATION, > + .entity = UVC_GUID_FWNODE, > + .selector = 0, > + .size = 8, > + .offset = 0, > + .v4l2_type = V4L2_CTRL_TYPE_MENU, > + .data_type = UVC_CTRL_DATA_TYPE_ENUM, > + .menu_mask = GENMASK(V4L2_CAMERA_ORIENTATION_EXTERNAL, > + V4L2_CAMERA_ORIENTATION_FRONT), > + }, > }; > > /* ------------------------------------------------------------------------ > @@ -3170,6 +3188,9 @@ static int uvc_ctrl_init_chain(struct uvc_video_chain *chain) > } else if (UVC_ENTITY_TYPE(entity) == UVC_EXT_GPIO_UNIT) { > bmControls = entity->gpio.bmControls; > bControlSize = entity->gpio.bControlSize; > + } else if (UVC_ENTITY_TYPE(entity) == UVC_FWNODE_UNIT) { > + bmControls = entity->fwnode.bmControls; > + bControlSize = entity->fwnode.bControlSize; > } > > /* Remove bogus/blacklisted controls */ > diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c > index b52e1ff401e24f69b867b5e975cda4260463e760..9a8e5d94b3eba09e1ee1be20bad5b016b6def915 100644 > --- a/drivers/media/usb/uvc/uvc_driver.c > +++ b/drivers/media/usb/uvc/uvc_driver.c > @@ -1752,11 +1752,15 @@ static int uvc_scan_device(struct uvc_device *dev) > return -1; > } > > - /* Add GPIO entity to the first chain. */ > - if (dev->gpio_unit) { > + /* Add virtual entities to the first chain. */ > + if (dev->gpio_unit || dev->fwnode_unit) { > chain = list_first_entry(&dev->chains, > struct uvc_video_chain, list); > - list_add_tail(&dev->gpio_unit->chain, &chain->entities); > + if (dev->gpio_unit) > + list_add_tail(&dev->gpio_unit->chain, &chain->entities); > + if (dev->fwnode_unit) > + list_add_tail(&dev->fwnode_unit->chain, > + &chain->entities); > } > > return 0; > @@ -2132,6 +2136,10 @@ static int uvc_probe(struct usb_interface *intf, > if (ret < 0) > goto error; > > + ret = uvc_fwnode_parse(dev); > + if (ret < 0) > + goto error; > + > dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n", > dev->uvc_version >> 8, dev->uvc_version & 0xff, > udev->product ? udev->product : "<unnamed>", > diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c > index cc68dd24eb42dce5b2846ca52a8dfa499c8aed96..01eeba2f049e9ebb25e091340a133656acbf28ca 100644 > --- a/drivers/media/usb/uvc/uvc_entity.c > +++ b/drivers/media/usb/uvc/uvc_entity.c > @@ -106,6 +106,7 @@ static int uvc_mc_init_entity(struct uvc_video_chain *chain, > case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: > case UVC_EXTERNAL_VENDOR_SPECIFIC: > case UVC_EXT_GPIO_UNIT: > + case UVC_FWNODE_UNIT: > default: > function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN; > break; > diff --git a/drivers/media/usb/uvc/uvc_fwnode.c b/drivers/media/usb/uvc/uvc_fwnode.c > new file mode 100644 > index 0000000000000000000000000000000000000000..20f7b8847551acfd44cbf09bcbf653d89985561f > --- /dev/null > +++ b/drivers/media/usb/uvc/uvc_fwnode.c > @@ -0,0 +1,73 @@ > +// SPDX-License-Identifier: GPL-2.0-or-later > +/* > + * uvc_fwnode.c -- USB Video Class driver > + * > + * Copyright 2025 Google LLC > + */ > + > +#include <linux/kernel.h> > +#include <linux/usb/uvc.h> > +#include <media/v4l2-fwnode.h> > +#include "uvcvideo.h" > + > +static int uvc_fwnode_get_cur(struct uvc_device *dev, struct uvc_entity *entity, > + u8 cs, void *data, u16 size) > +{ > + if (size < 1) > + return -EINVAL; > + > + switch (entity->fwnode.props.orientation) { > + case V4L2_FWNODE_ORIENTATION_FRONT: > + *(u8 *)data = V4L2_CAMERA_ORIENTATION_FRONT; > + break; > + case V4L2_FWNODE_ORIENTATION_BACK: > + *(u8 *)data = V4L2_CAMERA_ORIENTATION_BACK; > + break; > + default: > + *(u8 *)data = V4L2_CAMERA_ORIENTATION_EXTERNAL; > + } > + > + return 0; > +} > + > +static int uvc_fwnode_get_info(struct uvc_device *dev, > + struct uvc_entity *entity, u8 cs, u8 *caps) > +{ > + *caps = UVC_CONTROL_CAP_GET; > + return 0; > +} > + > +int uvc_fwnode_parse(struct uvc_device *dev) > +{ > + static const u8 uvc_fwnode_guid[] = UVC_GUID_FWNODE; > + struct v4l2_fwnode_device_properties props; > + struct uvc_entity *unit; > + int ret; > + > + ret = v4l2_fwnode_device_parse(&dev->udev->dev, &props); > + if (ret) > + return dev_err_probe(&dev->intf->dev, ret, > + "Can't parse fwnode\n"); > + > + if (props.orientation == V4L2_FWNODE_PROPERTY_UNSET) > + return 0; > + > + unit = uvc_alloc_entity(UVC_FWNODE_UNIT, UVC_FWNODE_UNIT_ID, 0, 1); > + if (!unit) > + return -ENOMEM; > + > + memcpy(unit->guid, uvc_fwnode_guid, sizeof(unit->guid)); > + unit->fwnode.props = props; > + unit->fwnode.bControlSize = 1; > + unit->fwnode.bmControls = (u8 *)unit + sizeof(*unit); > + unit->fwnode.bmControls[0] = 1; > + unit->get_cur = uvc_fwnode_get_cur; > + unit->get_info = uvc_fwnode_get_info; > + strscpy(unit->name, "FWNODE", sizeof(unit->name)); > + > + list_add_tail(&unit->list, &dev->entities); > + > + dev->fwnode_unit = unit; > + > + return 0; > +} > diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h > index aef96b96499ce09ffa286c51793482afd9832097..c52ab99bf8d21ab37270d27ffc040fd115b3f5ba 100644 > --- a/drivers/media/usb/uvc/uvcvideo.h > +++ b/drivers/media/usb/uvc/uvcvideo.h > @@ -19,6 +19,7 @@ > #include <media/v4l2-event.h> > #include <media/v4l2-fh.h> > #include <media/videobuf2-v4l2.h> > +#include <media/v4l2-fwnode.h> > > /* -------------------------------------------------------------------------- > * UVC constants > @@ -41,6 +42,9 @@ > #define UVC_EXT_GPIO_UNIT 0x7ffe > #define UVC_EXT_GPIO_UNIT_ID 0x100 > > +#define UVC_FWNODE_UNIT 0x7ffd > +#define UVC_FWNODE_UNIT_ID 0x101 > + > /* ------------------------------------------------------------------------ > * Driver specific constants. > */ > @@ -242,6 +246,12 @@ struct uvc_entity { > int irq; > bool initialized; > } gpio; > + > + struct { > + u8 bControlSize; > + u8 *bmControls; > + struct v4l2_fwnode_device_properties props; > + } fwnode; > }; > > u8 bNrInPins; > @@ -617,6 +627,7 @@ struct uvc_device { > } async_ctrl; > > struct uvc_entity *gpio_unit; > + struct uvc_entity *fwnode_unit; > }; > > enum uvc_handle_state { > @@ -835,4 +846,8 @@ size_t uvc_video_stats_dump(struct uvc_streaming *stream, char *buf, > int uvc_gpio_parse(struct uvc_device *dev); > int uvc_gpio_init_irq(struct uvc_device *dev); > void uvc_gpio_deinit(struct uvc_device *dev); > + > +/* fwnode */ > +int uvc_fwnode_parse(struct uvc_device *dev); > + > #endif > diff --git a/include/linux/usb/uvc.h b/include/linux/usb/uvc.h > index bce95153e5a65613a710d7316fc17cf5462b5bce..d818839b0442988d94ab44935e1ce855b0adf4a1 100644 > --- a/include/linux/usb/uvc.h > +++ b/include/linux/usb/uvc.h > @@ -29,6 +29,9 @@ > #define UVC_GUID_EXT_GPIO_CONTROLLER \ > {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ > 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x03} > +#define UVC_GUID_FWNODE \ > + {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ > + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x04} > > #define UVC_GUID_FORMAT_MJPEG \ > { 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \ > > -- > 2.49.0.504.g3bcea36a83-goog >
diff --git a/drivers/media/usb/uvc/Makefile b/drivers/media/usb/uvc/Makefile index 85514b6e538fbb8284e574ca14700f2d749e1a2e..2a5b76aab756c21011d966f3ce0410ff6b8e5b19 100644 --- a/drivers/media/usb/uvc/Makefile +++ b/drivers/media/usb/uvc/Makefile @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 uvcvideo-objs := uvc_driver.o uvc_queue.o uvc_v4l2.o uvc_video.o uvc_ctrl.o \ uvc_status.o uvc_isight.o uvc_debugfs.o uvc_metadata.o \ - uvc_gpio.o + uvc_gpio.o uvc_fwnode.o ifeq ($(CONFIG_MEDIA_CONTROLLER),y) uvcvideo-objs += uvc_entity.o endif diff --git a/drivers/media/usb/uvc/uvc_ctrl.c b/drivers/media/usb/uvc/uvc_ctrl.c index cbf19aa1d82374a08cf79b6a6787fa348b83523a..df84bf292dcab6b833fbd3c70eccbe9e567ee567 100644 --- a/drivers/media/usb/uvc/uvc_ctrl.c +++ b/drivers/media/usb/uvc/uvc_ctrl.c @@ -376,6 +376,13 @@ static const struct uvc_control_info uvc_ctrls[] = { | UVC_CTRL_FLAG_GET_DEF | UVC_CTRL_FLAG_AUTO_UPDATE, }, + { + .entity = UVC_GUID_FWNODE, + .selector = 0, + .index = 0, + .size = 1, + .flags = UVC_CTRL_FLAG_GET_CUR, + }, }; static const u32 uvc_control_classes[] = { @@ -975,6 +982,17 @@ static const struct uvc_control_mapping uvc_ctrl_mappings[] = { .data_type = UVC_CTRL_DATA_TYPE_BITMASK, .name = "Region of Interest Auto Ctrls", }, + { + .id = V4L2_CID_CAMERA_ORIENTATION, + .entity = UVC_GUID_FWNODE, + .selector = 0, + .size = 8, + .offset = 0, + .v4l2_type = V4L2_CTRL_TYPE_MENU, + .data_type = UVC_CTRL_DATA_TYPE_ENUM, + .menu_mask = GENMASK(V4L2_CAMERA_ORIENTATION_EXTERNAL, + V4L2_CAMERA_ORIENTATION_FRONT), + }, }; /* ------------------------------------------------------------------------ @@ -3170,6 +3188,9 @@ static int uvc_ctrl_init_chain(struct uvc_video_chain *chain) } else if (UVC_ENTITY_TYPE(entity) == UVC_EXT_GPIO_UNIT) { bmControls = entity->gpio.bmControls; bControlSize = entity->gpio.bControlSize; + } else if (UVC_ENTITY_TYPE(entity) == UVC_FWNODE_UNIT) { + bmControls = entity->fwnode.bmControls; + bControlSize = entity->fwnode.bControlSize; } /* Remove bogus/blacklisted controls */ diff --git a/drivers/media/usb/uvc/uvc_driver.c b/drivers/media/usb/uvc/uvc_driver.c index b52e1ff401e24f69b867b5e975cda4260463e760..9a8e5d94b3eba09e1ee1be20bad5b016b6def915 100644 --- a/drivers/media/usb/uvc/uvc_driver.c +++ b/drivers/media/usb/uvc/uvc_driver.c @@ -1752,11 +1752,15 @@ static int uvc_scan_device(struct uvc_device *dev) return -1; } - /* Add GPIO entity to the first chain. */ - if (dev->gpio_unit) { + /* Add virtual entities to the first chain. */ + if (dev->gpio_unit || dev->fwnode_unit) { chain = list_first_entry(&dev->chains, struct uvc_video_chain, list); - list_add_tail(&dev->gpio_unit->chain, &chain->entities); + if (dev->gpio_unit) + list_add_tail(&dev->gpio_unit->chain, &chain->entities); + if (dev->fwnode_unit) + list_add_tail(&dev->fwnode_unit->chain, + &chain->entities); } return 0; @@ -2132,6 +2136,10 @@ static int uvc_probe(struct usb_interface *intf, if (ret < 0) goto error; + ret = uvc_fwnode_parse(dev); + if (ret < 0) + goto error; + dev_info(&dev->udev->dev, "Found UVC %u.%02x device %s (%04x:%04x)\n", dev->uvc_version >> 8, dev->uvc_version & 0xff, udev->product ? udev->product : "<unnamed>", diff --git a/drivers/media/usb/uvc/uvc_entity.c b/drivers/media/usb/uvc/uvc_entity.c index cc68dd24eb42dce5b2846ca52a8dfa499c8aed96..01eeba2f049e9ebb25e091340a133656acbf28ca 100644 --- a/drivers/media/usb/uvc/uvc_entity.c +++ b/drivers/media/usb/uvc/uvc_entity.c @@ -106,6 +106,7 @@ static int uvc_mc_init_entity(struct uvc_video_chain *chain, case UVC_OTT_MEDIA_TRANSPORT_OUTPUT: case UVC_EXTERNAL_VENDOR_SPECIFIC: case UVC_EXT_GPIO_UNIT: + case UVC_FWNODE_UNIT: default: function = MEDIA_ENT_F_V4L2_SUBDEV_UNKNOWN; break; diff --git a/drivers/media/usb/uvc/uvc_fwnode.c b/drivers/media/usb/uvc/uvc_fwnode.c new file mode 100644 index 0000000000000000000000000000000000000000..20f7b8847551acfd44cbf09bcbf653d89985561f --- /dev/null +++ b/drivers/media/usb/uvc/uvc_fwnode.c @@ -0,0 +1,73 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * uvc_fwnode.c -- USB Video Class driver + * + * Copyright 2025 Google LLC + */ + +#include <linux/kernel.h> +#include <linux/usb/uvc.h> +#include <media/v4l2-fwnode.h> +#include "uvcvideo.h" + +static int uvc_fwnode_get_cur(struct uvc_device *dev, struct uvc_entity *entity, + u8 cs, void *data, u16 size) +{ + if (size < 1) + return -EINVAL; + + switch (entity->fwnode.props.orientation) { + case V4L2_FWNODE_ORIENTATION_FRONT: + *(u8 *)data = V4L2_CAMERA_ORIENTATION_FRONT; + break; + case V4L2_FWNODE_ORIENTATION_BACK: + *(u8 *)data = V4L2_CAMERA_ORIENTATION_BACK; + break; + default: + *(u8 *)data = V4L2_CAMERA_ORIENTATION_EXTERNAL; + } + + return 0; +} + +static int uvc_fwnode_get_info(struct uvc_device *dev, + struct uvc_entity *entity, u8 cs, u8 *caps) +{ + *caps = UVC_CONTROL_CAP_GET; + return 0; +} + +int uvc_fwnode_parse(struct uvc_device *dev) +{ + static const u8 uvc_fwnode_guid[] = UVC_GUID_FWNODE; + struct v4l2_fwnode_device_properties props; + struct uvc_entity *unit; + int ret; + + ret = v4l2_fwnode_device_parse(&dev->udev->dev, &props); + if (ret) + return dev_err_probe(&dev->intf->dev, ret, + "Can't parse fwnode\n"); + + if (props.orientation == V4L2_FWNODE_PROPERTY_UNSET) + return 0; + + unit = uvc_alloc_entity(UVC_FWNODE_UNIT, UVC_FWNODE_UNIT_ID, 0, 1); + if (!unit) + return -ENOMEM; + + memcpy(unit->guid, uvc_fwnode_guid, sizeof(unit->guid)); + unit->fwnode.props = props; + unit->fwnode.bControlSize = 1; + unit->fwnode.bmControls = (u8 *)unit + sizeof(*unit); + unit->fwnode.bmControls[0] = 1; + unit->get_cur = uvc_fwnode_get_cur; + unit->get_info = uvc_fwnode_get_info; + strscpy(unit->name, "FWNODE", sizeof(unit->name)); + + list_add_tail(&unit->list, &dev->entities); + + dev->fwnode_unit = unit; + + return 0; +} diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h index aef96b96499ce09ffa286c51793482afd9832097..c52ab99bf8d21ab37270d27ffc040fd115b3f5ba 100644 --- a/drivers/media/usb/uvc/uvcvideo.h +++ b/drivers/media/usb/uvc/uvcvideo.h @@ -19,6 +19,7 @@ #include <media/v4l2-event.h> #include <media/v4l2-fh.h> #include <media/videobuf2-v4l2.h> +#include <media/v4l2-fwnode.h> /* -------------------------------------------------------------------------- * UVC constants @@ -41,6 +42,9 @@ #define UVC_EXT_GPIO_UNIT 0x7ffe #define UVC_EXT_GPIO_UNIT_ID 0x100 +#define UVC_FWNODE_UNIT 0x7ffd +#define UVC_FWNODE_UNIT_ID 0x101 + /* ------------------------------------------------------------------------ * Driver specific constants. */ @@ -242,6 +246,12 @@ struct uvc_entity { int irq; bool initialized; } gpio; + + struct { + u8 bControlSize; + u8 *bmControls; + struct v4l2_fwnode_device_properties props; + } fwnode; }; u8 bNrInPins; @@ -617,6 +627,7 @@ struct uvc_device { } async_ctrl; struct uvc_entity *gpio_unit; + struct uvc_entity *fwnode_unit; }; enum uvc_handle_state { @@ -835,4 +846,8 @@ size_t uvc_video_stats_dump(struct uvc_streaming *stream, char *buf, int uvc_gpio_parse(struct uvc_device *dev); int uvc_gpio_init_irq(struct uvc_device *dev); void uvc_gpio_deinit(struct uvc_device *dev); + +/* fwnode */ +int uvc_fwnode_parse(struct uvc_device *dev); + #endif diff --git a/include/linux/usb/uvc.h b/include/linux/usb/uvc.h index bce95153e5a65613a710d7316fc17cf5462b5bce..d818839b0442988d94ab44935e1ce855b0adf4a1 100644 --- a/include/linux/usb/uvc.h +++ b/include/linux/usb/uvc.h @@ -29,6 +29,9 @@ #define UVC_GUID_EXT_GPIO_CONTROLLER \ {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x03} +#define UVC_GUID_FWNODE \ + {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, \ + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x04} #define UVC_GUID_FORMAT_MJPEG \ { 'M', 'J', 'P', 'G', 0x00, 0x00, 0x10, 0x00, \
Fetch the orientation from the fwnode and map it into a control. The uvc driver does not use the media controller, so we need to create a virtual entity, like we previously did with the external gpio. Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> --- drivers/media/usb/uvc/Makefile | 2 +- drivers/media/usb/uvc/uvc_ctrl.c | 21 +++++++++++ drivers/media/usb/uvc/uvc_driver.c | 14 ++++++-- drivers/media/usb/uvc/uvc_entity.c | 1 + drivers/media/usb/uvc/uvc_fwnode.c | 73 ++++++++++++++++++++++++++++++++++++++ drivers/media/usb/uvc/uvcvideo.h | 15 ++++++++ include/linux/usb/uvc.h | 3 ++ 7 files changed, 125 insertions(+), 4 deletions(-)